
* {
  box-sizing: border-box;
}

body {
  max-width: 800px;
  /* margin: auto; */
  margin: 0 auto;
  padding: 0;
  /* padding: 1em; */
  line-height: 1.5;
  /* background-color: #efefef; */
  background-color: #fff;
}


/* add at 2022.11.15 */
.content-main {
  margin: 0 auto;
  padding: 0;
  /* font-size 85% -> 19 ; 19 * 1.5 = 28.5 -> 30 */
  min-height: calc(100vh - 60px - 30px);
}

/* header and footer areas */
.menu { padding: 0; }
.menu li { display: inline-block; }
.article-meta, .menu a {
  text-decoration: none;
  background: #eee;
  padding: 5px;
  border-radius: 5px;
}

/* add at 2022.11.15 */
footer {
  /* display: flex;
  align-items: center; */
  width: 100%;
  height: 60px;
  /* background-color: #bef; */
}

.menu, .article-meta, footer { text-align: center; }
.title { font-size: 1.1em; }
footer a { text-decoration: none; }
hr {
  border-style: dashed;
  color: #ddd;
}

/* code */
pre {
  border: 1px solid #ddd;
  box-shadow: 5px 5px 5px #eee;
  padding: 1em;
  overflow-x: auto;
}
code { background: #f9f9f9; }
pre code { background: none; }

/* misc elements */
img, iframe, video { max-width: 100%; }
main { hyphens: auto; }
blockquote {
  background: #f9f9f9;
  border-left: 5px solid #ccc;
  padding: 3px 1em 3px;
}

table {
  margin: auto;
  border-top: 1px solid #666;
  border-bottom: 1px solid #666;
}
table thead th { border-bottom: 1px solid #ddd; }
th, td { padding: 5px; }
thead, tfoot, tr:nth-child(even) { background: #eee; }

